Frame construction for metal-heading machines



A. H. GAESS. FRAME CONSTRUCHON FOR METAL HEADING MACHINES.

APPLICATION FILED APR. 1, 1920.

Patented Mar. 22, 1921.

UNITED STATES PATENT OFFICE.

ALBERT H. Gauss, or WATERBURY, cormncrrcur; ASSIGNORTO THE E. J. MANVILLE MACHINE COMPANY OF WATERBURY,

NECTICUT.

CONNECTICUT, A CORPORATION OF CON- FRAME CONSTRUCTION FOR METAL-HEADING MACHINES.

Specification of Letters Patent Patented Mar. 22, 1921.

Application filed April 1, 1920. Serial No. 370,405.

To add w hum it may conch m: 1

lie it known that I, ALBERT .l-l. GAnss, citizen of the United States, residing at ll atcrbury, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Frame Construction for Metal-Heading Machines, of which the following is a specification.

This invention relates to thosemachines for forming heads on metal blanks, of the ciuss ilhistrated and described in U. S. patcut to Andrew C. Campbell, No. 926,170, June at, 1909 and more particularly to such machines of this class as have caps which are hinged to the frames and swing over onto the tops of the dies for holding them in place, of the t" pe set forth in U. Ed. pi: to Albert H. (mess, No. 1,166,668, of January dc, 1916.

lilachines of this character are large and m *c, they are required to operate rapidly upon tough metal of thick cross-secticu and of necessity the heavy reciprocatiu punch mechanisms strike powerful blows upon the metal held in the dies. Consequently the frames of these machines are subject to great strains and tend to yield in the directions of least resistance under the lHlpttCt of the blows of the pun'lies on the metal being shaped, yet the mechanisms must move easily and smoothly to reduce the motive power required to a minimum and must work exactly to produce an accurate and uniform product.

'3 1e object of this invention is to cause such coiiperation between the frames and swinging die caps of these machines that the die cape besides providing means which permit easy quick access to and secure an accurate retention of the diespwithout complication and in a simple manner, tie together and strengthen the frames in their previously weakest localities, when secured in position for retaining the dies, and thus increasing the efficiency of the machines and uniformity of the product.

This object is attained in the embodiment of the invention illustrated by having sections of the upper surface of the frame of the machine on each side of the die opening raised above the surrounding surface and forming on the outer edges of the raised portions upwardly extending shoulders that are parallel with the side walls of the die opening inthe frame, and providing the side edges of the swinging die cap with downwardly extending shoulders that closely iitfthe shoulders on the frame so that when the cap is turned down and secured in operative position it forms a tie across the space above the die opening and with the frame boxes .in the die opening on four sides so that the frame cannot spring any more in one direction than the other under the impact of the blows of the reciprocating punch mechanism.

lfigurel of the accompanying drawings shows'a plan of the frame of a machine of the class mentioned constructed according to this invention with a swinging die cap secured inoperative position. F i 2 shows a central longitudinal section of the frame and die cap. Fig. 3 shows a transverse section of thefi'ame on the plane indicated by the dotted line 3-3 on Fig. 1 with the die cap closed. Fig. t is a plan of a portion of the top of the frame without the die cap. Fig.

5 is a view of the under side of the die ing of iron. oblong in outline and provided near one end with the usual die opening 2 at the bottom of which is the die bed 3 that extends across from one side to the other of the die opening and is integral with the frame. ihl; eacl side of the die o pening and raised somewhat above the top surface of the remainder of the frame in that locality is a rib l. The outer vertical edges 5 of these ribs are machined substantially parallel to the side walls 6 of the die opening. (hi the top of the frame at the back end of the die opening is an integral boss '7 with a perforation that extends transversely of the frame and substantially parallel to the back wall 8 ofthe die opening.

The die cap 9 has two perforated ears 10 that lit the boss on the frame and are hinged thereto by the pivot pin 11. The die cap isswung over onto the top of the frame to permit access to the die opening and is turned down for closing the top of the opening and retaining the dies on the die bed. Gnthe edges of the die cap are downwardly extending flanges 12. The inner edges 13 of these flanges are machined substantially vertical parallel with the side walls of the die opening and such a distance apart that when the die cap is turned down into the openinguthese inner edges of the flanges closely fit the outer vertical edges 5 of the ribs 4 on the top of the frame, thus forming a clamp across the top of the die opening which prevents the frame from yielding outwardly on the top under the impulse of the powerful blows of the punching mechanism ofthe machine when in operation. Bolts 15 are passed through the die cap into the ribs on the frame for holding the the cap down in position for closing the diefopening on top ann strengthening the frame. With this construction the die cap cooperates with the frame in boxing in the die opening on all sides except the front and at the same time it clamps the top of the-frame above the die opening so that it cannot yield outwardly, the die bed joining the'frame beneath the die opening.

The invention claimed is 1. A- metal headingmachine having a frame with a die open'in and upwardly extending shoulders par; lel with the side walls of the die opening, and a die cap connected with the frame and provided with downwardly extending shoulders parallel with the side walls of the die opening, said downwardly extending shoulders on the die cap ei'igaging the upwardly extending shoulders on the. frame and preventing the frame tronr'yieiding outwardly when the die cap isin operative position and closes the top of the the opening.

2. A metal heading machine having a 7 finale with. a die opening a die bed integral with the ii'rai'iiie extending across the bottom of the die opening and upwardly extending shoulders pa allel with the side walls of the die opening,and a cap connected with the frame and provided with downwardly extending shoulders parallel with the side walls of the die opening, said downwardly extending shoulders on the die cap engaging the upwardly extending shoulders on the frame and tying the frame together above the die bed.

3. A metal heading machine having a frame with a die opening and upwardly extending shoulders parallel with the side walls oi the die opening, and a cap hinged to the frame and provided with downwardly extending shoulders parallel with the side walls of the die opening, said downwardly extending shoulders on the die cap engaging the upwardly extending shoulders on the frame when the die cap is swung on its pivot down into the die opening.

1-. A metal heading machine having a frame with a die opening and upwardly ex tending shoulders at the sides of the die o 'reniug, a die cap hinged to the frame and provided with downwardly extending shoul ders at its ends, said downwardly extending shoulders on the die cap engaging the upwardly extending shoulders on the frame when the die cap is swung down into the die (ripening, and means for securing the die cap with said shoulders in engagement.

metal heading machine having a frame with a die opening and upwardly extending ribs parallel with the side walls of the die opening, a die cap hinged to the Frame and provided with downwardly extending flanges parallel with the side walls oi? the die opening, the inner edges oi said downwardly extending flanges on the die rap engaging the outer edges of the upwardly extending ribs on the frame when the die cap is swung down into the die opening, and means for securing the die cap with the shoulders engaging the flanges.

ALBERT H; 1- ass. 

